Okay, I've got a new Icom IC-706MKIIG info for you:
There is a mod saying:
"Push P.AMP/ATT and RIT/SUB while power up and you will be able to see SHIFT-ADJ on your 706mkII. Dont know what this is for, recalibrating ?"
I have tested this and figured out the following:
When the SHIFT knob is in the middle position and you press SHIFT-ADJ, then "Good" is displayed. Nothing happens after power on.
But when you turn the SHIFT knob a little to the left or to the right, then good is displayed and next time you power up you have a modified shift adjustment. The SHIFT graph is different, too!
If you turn the knob a bit more to the left or to the right, then "Error" is displayed and nothing happens.
I wrote to Icom Europe and they say, that this function (P.AMP/ATT + RIT/SUB) is only used in the factory during the production process of the IC-706MKIIG. to calibrate the centersetting of the shift know.
Afterwards a new calibration shouldn't be necessary.
When you press the arrow in the SHIFT-ADJ menu for one second, the position of the shift know is stored as the new center setting.
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